Material based on a non-woven textile lap which may be used as reinforcement for impermeable coverings

摘要

The present invention relates to a material which may be used as reinforcement for bituminous impermeable coverings of the type constituted by a non-woven fibrous lap. The material being characterized in that the lap is formed by a complex comprising an intermediate layer constituted by a non-woven fabric of polyester. The non-woven fabric serving as a support for glass fibers implanted in its thickness. The fibers project on each side of said support and are folded back thereon.